|
Mineral precipitates from calcium-rich water can form ____.
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basalt
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Dinosaur fossils are found in some ____ rocks.
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coal
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Over millions of years, pressure converted peat into ____.
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lava
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|
Heat and pressure are required to create ____ rocks.
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limestone
|
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A black, glassy, volcanic igneous rock is ____.
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marble
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A metamorphic rock derived from limestone is ____.
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metamorphic
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Molten rock expelled by a volcano is called ____.
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obsidian
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A dark gray, fine-grained, volcanic igneous rock is ____.
|
sedimentary
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